Jaïrus Brandsma is a practical skilled international water manager. His main expertises are integrated water resource management, irrigation, and urban and rural drinking water. Jaïrus has carried out several projects in Africa, where he lived in Kenya and Malawi. Among these projects is a research to improve the design of the sand-storage dams in Kitui region, Kenya and a study for the Blantyre water board to reduce non revenue water. Furthermore, he designed several irrigation systems in, for example, Indonesia and Kenya. Trough his GIS knowledge and fieldwork the scientifically based researches will always result in a practical solution for a water management problem.